| Portsmouth to Arcos de Valdevez | 710.17 mi (1,142.90 km) |
| Portsmouth to Arcozelo | 764.28 mi (1,230.00 km) |
| Portsmouth to Arganil | 804.70 mi (1,295.04 km) |
| Portsmouth to Arouca | 763.22 mi (1,228.29 km) |
| Portsmouth to Arruda dos Vinhos | 904.16 mi (1,455.11 km) |
| Portsmouth to Aveiro | 790.91 mi (1,272.85 km) |
| Portsmouth to Aver-o-Mar | 745.67 mi (1,200.03 km) |
| Portsmouth to Aves | 732.71 mi (1,179.18 km) |
| Portsmouth to Azambuja | 894.72 mi (1,439.91 km) |
| Portsmouth to Baiao | 744.03 mi (1,197.40 km) |
| Portsmouth to Barcelos | 735.16 mi (1,183.12 km) |
| Portsmouth to Barreiro | 924.37 mi (1,487.63 km) |
| Portsmouth to Batalha | 856.19 mi (1,377.91 km) |
| Portsmouth to Beja | 943.08 mi (1,517.74 km) |
| Portsmouth to Belas | 921.68 mi (1,483.31 km) |
